Reverse Power Protection Basics | Example Using the SEL-751A Protection Relay

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In this video we discuss how reverse power protection works using the SEL-751A protection relay as an example. We discuss the importance of CT and relay polarity and how to convert primary power quantities into secondary quantities.
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00:00 Intro
00:17 Introduction to reverse power protection and power elements
01:07 Determining the CT polarity
02:28 Determining the relay terminal polarity
04:24 Reverse power protection example using the SEL-751A protection relay

[@romeroengineering]

Learn more with our online courses here: www.romeroengineering.co/courses

[@surendrakverma555]

Very good. Thanks 👍

[@davidauger3162]

Thank you!

[@romeroengineering]

You're welcome!

[@baylegend9295]

You are simply the best! Thank you for your contribution to knowledge. By the way, I'm trying to learn relay protection schematics and circuit breaker trip and control diagrams. Do you have a video about them? I look forward to your response.

[@romeroengineering]

Thanks! We don't have videos on those topics yet, but we'll consider them for future videos

[@krshnkk]

@@romeroengineering Reverse power protection is only for generators when the steam stop valves shut off, can you tell me why there will be reverse power in equipment other than generators?

[@thanhtrinh4146]

Can you give instructions on how to use phase overcurrent protection? Thanks in advance!

[@mkhoirun918]

In ETAP i found overpower and under Power in Reverse Power setting. For reverse setting in what i should fill for example setting is 4% from Pm (kW). In Overpower or Underpower?

[@sadanandkonnur8543]

You calculated in W but setting in VA ?

[@romeroengineering]

Hi! Please keep watching, this is explained at minute 11:00 in the video, where the quantity is changed to -WATTS so that it is real power in the reverse direction